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tccontre
75 lines
3.2 KiB
YAML
75 lines
3.2 KiB
YAML
name: Disable Windows App Hotkeys
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id: 1490f224-ad8b-11eb-8c4f-acde48001122
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version: 2
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date: '2022-01-27'
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author: Teoderick Contreras, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: This analytic detects a suspicious registry modification to disable Windows
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hotkey (shortcut keys) for native Windows applications. This technique is commonly
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used to disable certain or several Windows applications like `taskmgr.exe` and `cmd.exe`.
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This technique is used to impair the analyst in analyzing and removing the attacker
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implant in compromised systems.
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search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry
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where Registry.registry_path="*\\Windows NT\\CurrentVersion\\Image File Execution
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Options\\*" AND Registry.registry_value_data= "HotKey Disabled" AND Registry.registry_value_name
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= "Debugger" by _time span=1h Registry.dest Registry.user Registry.registry_path
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Registry.registry_value_name Registry.registry_key_name Registry.process_guid Registry.registry_value_data
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| `drop_dm_object_name(Registry)` |rename process_guid as proc_guid |join proc_guid,
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_time [| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes
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by _time span=1h Processes.process_id Processes.process_name Processes.process Processes.dest
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Processes.parent_process_name Processes.parent_process Processes.process_guid |
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`drop_dm_object_name(Processes)` |rename process_guid as proc_guid | fields _time
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dest user parent_process_name parent_process process_name process_path process proc_guid
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registry_path registry_value_name registry_value_data registry_key_name] | table
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_time dest user parent_process_name parent_process process_name process_path process
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proc_guid registry_path registry_value_name registry_value_data registry_key_name
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| `disable_windows_app_hotkeys_filter`'
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how_to_implement: To successfully implement this search, you must be ingesting data
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that records registry activity from your hosts to populate the endpoint data model
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in the registry node. This is typically populated via endpoint detection-and-response
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product, such as CarbonBlack or endpoint data sources, such as Sysmon. The data
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used for this search is typically generated via logs that report reads and writes
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to the registry.
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known_false_positives: unknown
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references:
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- https://thedfirreport.com/2020/04/20/sqlserver-or-the-miner-in-the-basement/
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tags:
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analytic_story:
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- XMRig
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- Windows Registry Abuse
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confidence: 100
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/hotkey_disabled_hidden_user/windows-sysmon.log
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impact: 40
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kill_chain_phases:
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- Exploitation
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message: Disabled 'Windows App Hotkeys' on $dest$
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mitre_attack_id:
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- T1562.001
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- T1562
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Registry.registry_key_name
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- Registry.registry_path
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- Registry.registry_value_name
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- Registry.dest Registry.user
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risk_score: 40
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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asset_type: Endpoint
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